ASTROSAT CZTI

Data Quality Report

Orbit 37188

Creation date: 2024-06-27T21:36:41.041356
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_079T01_9000005284_37188cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37188cztM0_level2_quad_clean.evt
Size (bytes)486,861,12084,381,120
Size464.3 MB 80.5 MB
Events in quadrant A2,769,531579,567
Events in quadrant B3,111,240571,803
Events in quadrant C5,330,743528,984
Events in quadrant D3,201,738532,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111033
B0122092
C0190892
D0125492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884210.429975%
B48841412.886978%
C488489618.345618%
D48841563.194103%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7007 4885 4 4 0.06% 0.08%
B 7007 4885 86 86 1.23% 1.76%
C 7007 4885 979 979 13.97% 20.04%
D 7007 4885 123 123 1.76% 2.52%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 248561 1939.5 641 632 127.8
A 9 143 31776 243.63 641 632 127.8
A 13 6 8072 58.2 641 632 127.8
B 5 184 421232 3566.98 619 605 117.9
B 5 172 127652 1077.38 619 605 117.9
B 0 213 73626 619.23 619 605 117.9
C 10 49 2380098 17662.69 586 592 134.7
C 14 254 223467 1654.37 586 592 134.7
C 15 214 202919 1501.84 586 592 134.7
D 1 52 262408 1775.16 609 596 147.5
D 2 249 180253 1218.13 609 596 147.5
D 10 118 159518 1077.54 609 596 147.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter